What leaked or announced information are you looking forward to hearing most?
For me, this early out, it's two things, skill trees and racial bonuses. As a hardcoe PVE player and raid progression enthusiast, I am a min/maxing fiend. I know min/maxing in ESO is less concrete, but there are still some ways to make an "ideal" character for my personal play-style.
For me creating the "ideal character" (for me) starts at character creation, and has a lot to do with racial bonuses and skills.
Bretons in Skyrim have a 25% resistance to all magica, which for a tank character, is ideal for damage mitigation. If I wanted to play as a tank, so much would revolve around staying alive. Since heavy armor helps against physical damage, and has no real effect on magic, having a natural resistance to all magic damage helps.
Altmer have a bonus to magica and have a skill to regen magica - ideal for a mage or a healer. Having that extra magica and the free regen, a min/maxer can allocate fewer points into magica, and put more to stamina and health, (so long as magica pool in the end is sufficient for PVE encounters)
For pure damage, the Skyrim bonuses to orcs and redguards are fantastic. Berzerker's rage boosts damage output. With Adrenaline rush, Redguards can use more power attacks in a given encounter, also increasing damage output.
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Knowing skill trees is just theory crafting at this point... fun to know, and a decent way to kill some time thinking about how things *may* occur at launch. However, since everyone can use any weapon / tons of skills, etc - there may be a theoretical build in which a tank wears heavy armor, and relies on magica for damage reduction and threat rather than attacking, and using stamina for blocking, so Altmer with magica bonus and regen could be best for that - it'd be nice to have a couple weeks / months to get used to the system to theorycraft.
ZOS needs to start "official" leaks! grrr.